Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1981-09-08
1983-08-09
Haroian, Harry N.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
G01C 504
Patent
active
043970990
ABSTRACT:
In an electronic apparatus for measuring a difference of elevation between two points, said apparatus comprising: a tube made of a flexible material; a fluid with a low viscosity completely filling said tube; two piezoelectronical pressure transducers each connected to a source of electrical power and mounted at one extremity of the tube in contact with the fluid filling said tube to produce signal a proportional to the pressure of this fluid; electronic means connected to each of said piezoelectrical pressure transducers for processing the signals received from said transducers, said processing means comprising means for generating a signal proportional to the difference between the signals received from the transducers and means for converting said generated signal into a value indicating the difference of elevation between the extremities of the tube, and means for displaying said value indicating the difference of elevation, the improvement wherein it further comprises means for generating a signal proportional to the mean temperature of the fluid filling said tube; and means for correcting said generated signal proportional to the difference between the signals received from the transducers, with said generated signal proportional to the mean temperature in order to compensate any variation of said generated signal due to a variation in the fluid temperature along the tube.
REFERENCES:
patent: 2592744 (1952-04-01), Ryant
patent: 4145817 (1979-03-01), Ager
Desbiens Regis
Desbiens Rejean
Gaucher Edwin
LandOfFree
Electronic apparatus for measuring the difference of elevation b does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic apparatus for measuring the difference of elevation b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic apparatus for measuring the difference of elevation b will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-582125